Mixtures of K B r and in acidic medium can be used as brominating agents.

The chemical reaction is, .Then .Then is :

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answer is B.

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Detailed Solution

Concept- Chemical formulas provide us with information on the overall number of atoms in a compound's molecules, the number of different atoms in a single molecule, and the makeup of the molecules, but not on the state of the molecules.
The concentration of the reactants, reaction temperature, reaction pressure, and specific catalysts are just a few of the variables that can affect the outcome of the reaction of the same two compounds.
The type of reaction that takes place between the various products depends on the reaction's order. It determines the reaction's mechanism, so different products made from different reactants are identical.
This reaction results in the same thing. Since bromine has vacant d-orbitals, its covalencies can vary. Bromine molecules typically contain 7 electrons. Its covalent relationships alter in various excitation states.
A balanced chemical equation contains an equal number of atoms on either side.
The reaction can be written as follows;
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